The Academic Computing Center has five trainers available in its computer labs to provide training sessions to students. Assume that the design capacity of the system is $2210$ students per semester and that effective capacity equals $90\%$ of

design capacity. If the number of students who actually got their orientation session is $1500,$ what is the efficiency of the system $($in $\%)?($Enter your response to two decimal places, e$.$g$.,75\mathrm{.}24.)$